| 唐山地震前地震活动模糊熵值的异常特征 |
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| 引用本文： | 马淑芹,牟光迅.唐山地震前地震活动模糊熵值的异常特征[J].华北地震科学,1997,15(3):73-77. |
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| 作者姓名： | 马淑芹 牟光迅 |
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| 作者单位： | 天津市地震局!天津，300201，天津市地震局!天津，300201，天津市地震局!天津，300201 |
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| 摘 要： | 定义了地震活动模糊熵概念，计算了唐山地震前地震活动模糊熵随时间，空间的变化，发现唐山Ｍｓ７．８地震发生前，地震活动模糊熵值下降，唐山Ｍｓ７．８地震发生在地震活动模糊熵值较低的地方，这符合大地震前震源区地震活动从无序趋向有序的规律，地震活动模糊熵反模糊因子与震群活动熵统一起来，比震群活动熵更突出地反映地震活动异常。
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| 关 键 词： | 地震 模糊识别 信息熵 地震前兆 |
RESEARCHES ON SEISMICITY FUZZY ENTROPY ANOMALY CHARACTERISTICS BEFORE TANGSHAN EARTHQUAKE |
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| Ma Shuqin, Mu Guangxun, Zhao Huijun.RESEARCHES ON SEISMICITY FUZZY ENTROPY ANOMALY CHARACTERISTICS BEFORE TANGSHAN EARTHQUAKE[J].North China Earthquake Sciences,1997,15(3):73-77. |
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| Authors: | Ma Shuqin Mu Guangxun Zhao Huijun |
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| Abstract: | Seismicity fuzzy entropy H is defined in this paper. That seismicity fuzzy entropy values change with time, with space before Tangshan earthquake is computed in this paper. It is discovered that seis micity fuzzy entropy values fell down be fore Tangshan earthquake,and Tangshan earthquake occurred at the area of low seismicity fuzzy entropy value. This result fits well with the law that seismicity in earthquake source area changes from disorder to order before large earthquake. Seismicity fuzzy entropy unifys the fuzzy factor and the seismicity entropy as one, it can reflect seismicity anomaly better than seismicity entropy itself. |
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| Keywords: | Seismicity fuzzy entropy earthquake source area Tangshan earthquake |
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